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comparison libtomcrypt/src/misc/pkcs5/pkcs_5_2.c @ 1471:6dba84798cd5

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Update to libtomcrypt 1.18.1, merged with Dropbear changes
author Matt Johnston <matt@ucc.asn.au>
date Fri, 09 Feb 2018 21:44:05 +0800
parents f849a5ca2efc
children
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1470:8bba51a55704 1471:6dba84798cd5
3 * LibTomCrypt is a library that provides various cryptographic 3 * LibTomCrypt is a library that provides various cryptographic
4 * algorithms in a highly modular and flexible manner. 4 * algorithms in a highly modular and flexible manner.
5 * 5 *
6 * The library is free for all purposes without any express 6 * The library is free for all purposes without any express
7 * guarantee it works. 7 * guarantee it works.
8 *
9 * Tom St Denis, [email protected], http://libtom.org
10 */ 8 */
11 #include <tomcrypt.h> 9 #include "tomcrypt.h"
12 10
13 /** 11 /**
14 @file pkcs_5_2.c 12 @file pkcs_5_2.c
15 LTC_PKCS #5, Algorithm #2, Tom St Denis 13 PKCS #5, Algorithm #2, Tom St Denis
16 */ 14 */
17 #ifdef LTC_PKCS_5 15 #ifdef LTC_PKCS_5
18 16
19 /** 17 /**
20 Execute LTC_PKCS #5 v2 18 Execute PKCS #5 v2
21 @param password The input password (or key) 19 @param password The input password (or key)
22 @param password_len The length of the password (octets) 20 @param password_len The length of the password (octets)
23 @param salt The salt (or nonce) 21 @param salt The salt (or nonce)
24 @param salt_len The length of the salt (octets) 22 @param salt_len The length of the salt (octets)
25 @param iteration_count # of iterations desired for LTC_PKCS #5 v2 [read specs for more] 23 @param iteration_count # of iterations desired for PKCS #5 v2 [read specs for more]
26 @param hash_idx The index of the hash desired 24 @param hash_idx The index of the hash desired
27 @param out [out] The destination for this algorithm 25 @param out [out] The destination for this algorithm
28 @param outlen [in/out] The max size and resulting size of the algorithm output 26 @param outlen [in/out] The max size and resulting size of the algorithm output
29 @return CRYPT_OK if successful 27 @return CRYPT_OK if successful
30 */ 28 */
31 int pkcs_5_alg2(const unsigned char *password, unsigned long password_len, 29 int pkcs_5_alg2(const unsigned char *password, unsigned long password_len,
32 const unsigned char *salt, unsigned long salt_len, 30 const unsigned char *salt, unsigned long salt_len,
33 int iteration_count, int hash_idx, 31 int iteration_count, int hash_idx,
34 unsigned char *out, unsigned long *outlen) 32 unsigned char *out, unsigned long *outlen)
35 { 33 {
36 int err, itts; 34 int err, itts;
67 blkno = 1; 65 blkno = 1;
68 stored = 0; 66 stored = 0;
69 while (left != 0) { 67 while (left != 0) {
70 /* process block number blkno */ 68 /* process block number blkno */
71 zeromem(buf[0], MAXBLOCKSIZE*2); 69 zeromem(buf[0], MAXBLOCKSIZE*2);
72 70
73 /* store current block number and increment for next pass */ 71 /* store current block number and increment for next pass */
74 STORE32H(blkno, buf[1]); 72 STORE32H(blkno, buf[1]);
75 ++blkno; 73 ++blkno;
76 74
77 /* get PRF(P, S||int(blkno)) */ 75 /* get PRF(P, S||int(blkno)) */
78 if ((err = hmac_init(hmac, hash_idx, password, password_len)) != CRYPT_OK) { 76 if ((err = hmac_init(hmac, hash_idx, password, password_len)) != CRYPT_OK) {
79 goto LBL_ERR; 77 goto LBL_ERR;
80 } 78 }
81 if ((err = hmac_process(hmac, salt, salt_len)) != CRYPT_OK) { 79 if ((err = hmac_process(hmac, salt, salt_len)) != CRYPT_OK) {
82 goto LBL_ERR; 80 goto LBL_ERR;
83 } 81 }
122 } 120 }
123 121
124 #endif 122 #endif
125 123
126 124
127 /* $Source$ */ 125 /* ref: $Format:%D$ */
128 /* $Revision$ */ 126 /* git commit: $Format:%H$ */
129 /* $Date$ */ 127 /* commit time: $Format:%ai$ */